| Experimental investigation on compressive dwell fatigue behavior of titanium alloy pressure hull for deep-sea manned submersibles | |
Wang, Lei1,2,3; Ye, Cong1,3,4; Sun, Chengqi5,6 ; Feng, Shichao1,3; Xie, Xiaozhong1,2; Gao, Yuan1,2; Zhao, Kun7; Li, Yanqing1,2,3; Wan, Zhengquan4
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| Corresponding Author | Ye, Cong(yec@vip.163.com) |
| Source Publication | OCEAN ENGINEERING
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| 2024-07-01 | |
| Volume | 303Pages:14 |
| ISSN | 0029-8018 |
| Abstract | The spherical pressure hull of deep-sea manned submersible is subjected to the alternating load with high dwell pressure during the cyclic working state of diving, operating and rising. Therefore, the compressive dwell fatigue behavior is a key factor to be considered in the structural safety evaluation of the pressure hull for manned submersibles. In this paper, a structure -grade dwell fatigue test of the pressure hull and a variety of specimengrade compressive dwell fatigue tests were performed for Ti - 6Al - 4V ELI and Ti - 6Al - 2Sn - 2Zr - 3Mo-X alloys. Results show that no obvious structural deformation occurs in the spherical hull after the dwell fatigue test and no detectable out -of -standard defect is found in the welds when the dwell pressure value is the maximum operating pressure. The cumulative compressive strains of dwell fatigue specimens show that the base metal and welding joint have undergone plastic deformation when the maximum compressive stress value is 0.9 R p0.2 . No microcracks or changes in the microstructure characteristics are observed in the specimens. The present results support the structural design and safety assessment of deep-sea manned submersibles for long-term service. |
| Keyword | Compressive dwell fatigue Pressure hull Deep-sea manned submersible Time -dependent strain accumulation Titanium alloy |
| DOI | 10.1016/j.oceaneng.2024.117646 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001227765200001 |
| WOS Keyword | MICROSTRUCTURE ; TIME |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| Funding Project | National Key Research and Development Program of China[2021YFC2802302] ; National Key Research and Development Program of China[2017YFC0305501] |
| Funding Organization | National Key Research and Development Program of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95397 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Ye, Cong |
| Affiliation | 1.China Ship Sci Res Ctr, Wuxi 214082, Peoples R China 2.Natl Key Lab Ship Vibrat & Noise, Wuxi 214082, Peoples R China 3.State Key Lab Deep Sea Manned Vehicles, Wuxi 214082, Peoples R China 4.Taihu Lab Deepsea Technol Sci, Wuxi 214082, Peoples R China 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 7.Baoji Titanium Ind Co Ltd, Baoji 721014, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Lei,Ye, Cong,Sun, Chengqi,et al. Experimental investigation on compressive dwell fatigue behavior of titanium alloy pressure hull for deep-sea manned submersibles[J]. OCEAN ENGINEERING,2024,303:14. |
| APA | Wang, Lei.,Ye, Cong.,Sun, Chengqi.,Feng, Shichao.,Xie, Xiaozhong.,...&Wan, Zhengquan.(2024).Experimental investigation on compressive dwell fatigue behavior of titanium alloy pressure hull for deep-sea manned submersibles.OCEAN ENGINEERING,303,14. |
| MLA | Wang, Lei,et al."Experimental investigation on compressive dwell fatigue behavior of titanium alloy pressure hull for deep-sea manned submersibles".OCEAN ENGINEERING 303(2024):14. |
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